benzimmer

# Remove point in time backups from timemachine
# First mount timemachine volume (for example open Time Machine.app)
sudo tmutil delete /Volumes/Time Machine Backups/Backups.backupdb/$(MACHINE_NAME)/$(DATE)

# If you have your backups stored in a sparsebundle you can reclaim the freed space with this:
sudo hdiutil compact $(DISK_IMAGE_PATH)
# Use this if you are on battery and receive a odd warning from the command above ;)
sudo hdiutil compact $(DISK_IMAGE_PATH) -batteryallowed 

benzimmer

# Show memory usage of all docker containers
$ for line in `docker ps | awk '{print $1}' | grep -v CONTAINER`; do docker ps | grep $line | awk '{printf $NF" "}' && echo $(( `cat /sys/fs/cgroup/memory/docker/$line*/memory.usage_in_bytes` / 1024 / 1024 ))MB ; done

# Remove non-running Docker containers
$ docker rm `(docker ps -q && docker ps -qa) | sort | uniq -u`

benzimmer

git checkout --orphan newbranch
git rm -rf .
<do work>
git add your files
git commit -m 'Initial commit'

benzimmer

.video-wrapper {
	position: relative;
	padding-bottom: 56.25%; /* 16:9 */
	padding-top: 25px;
	height: 0;
}

.video-wrapper iframe {
	position: absolute;
	top: 0;

benzimmer

$ tmux attach
protocol version mismatch (client 7, server 6)
$ pgrep tmux
3429
$ /proc/3429/exe attach

benzimmer

### Keybase proof

I hereby claim:

  * I am benzimmer on github.
  * I am benzimmer (https://keybase.io/benzimmer) on keybase.
  * I have a public key whose fingerprint is 633B 78E8 76FB 1CBF B7A3  6388 796D FEFF D4D2 519C

To claim this, I am signing this object:

benzimmer

Infopark&Friends Ruby Beginners Workshop

$> irb

Alles ist ein Objekt

Um in Ruby Dinge zu tun versetzt man sich in die Lage eines Objektes. Um herauszufinden welches Objekt man gerade ist benutzt man self

self